Temporarily publish container on ghcr for deployment

This commit is to be dropped before merge. For now it is added to
publish the container on the ghcr so that we can deploy the observe on
the passive testing infra.

.github/workflows/publish-ghcr.yml

@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - 'main'
+      - 'masih/observer-with-sql-support' # TODO: Remove before merge. Added to get it running on infra
     tags:
       - 'v*'
   pull_request: